Hand-drill.



I 1. R088 & E. S. LYONS.

HAND DRILL.

APPLICATION FILED OCT. 6, 1917.

1 272,1. 08. Patented July 9, 1918.

3 SHEETS-SHEET I.

MW- -y.

APPLICATION FILED OCT. 6 1917.

ROBB & E. S. LYONS.

HAND DRILL.

Patented July 9, 1918.

3 SHEETSSHEET 2.

04: mmms warms co mm, L: D411. WASHINDT'DN. n. c.

1. RDBB & E. S. LYONS.

HAND DRILL.

APPLICATION FILED ocr. a. 1911 l ,272, 1 O8. Patented July 9, 1918.

3 SHEETS-SHEET 3.

UNiTE STATES P NT orrion. I

v JOHN ROBB AND EDGAR sAMIinL LYONS, or' TORONTO, ONTARIO, CANADA.

HAND-DRILL.

Specification of Letters Patent.

Patented July 9, 1918.

7 Application filed October 6, 1917. Serial No. 195,182.-

clare that the following is a full, clear, and

exact description of the same. 7

Our invention relates to improvements in hand-drills, and more particularly to certain features which are incorporated with, and form a functional part of, the frame upon which the drill is removably mounted.

The object of our invention isto provide improved means, through which the position of the drill and its carrying frame is regulated, both horizontally and vertically, and the vertical throw of the feed-lever is controlled to meet certain restrictions To that end, our invention consists, broadly, of a vertical cylindrical post, attachable to a stationary base, stationary twin-arms, horizontally and vertically adjustable upon the post, a carrying bar vertically slidable upon the twin-arms a :feedlever pivoted upon thecarrying loar, and having its inner arm loosely linked to one of the stationary twin-arms, and means for.

removably attaching the drill to the carrying bar. j

Our invention further consists of certain details of construction, which swillrbe hereinafter fully outlined, and set forth in the claims. I

In the drawings Figures 1 and2, are similar side elevations of the drill, illustrating the differentconnections of the feed lever with each of the stationary twin-arms upon the frame.

Fig. 3, is a front elevation of the drill;

Fig. 4, is an enlarged detached detail view of the means for securing the upper end of the drill to the carrying bar; and

Fig. 5, is a similar detached detail view of the tightening hook.

Referring to the drawings, 1 is the vertical cylindrical post, provided at its lower end with the C clamp frame 2, revoluble upon the post 1, and carrying the screw clamp 12:; for securing the post 1 to its stationary ase.

4, 4, are stationary twin-arms, journaled upon the cylindrical post 1, and adapted for horizontal andvertical adjustment thereon. 5 is a carrying bar, vertically slidable in sockets upon the stationary twin-arms 4, 4. The feed-lever has the long manipulating arm 6 and the shorter inner arm 7, and is in pivotal engagement with the carrying arm '5 at a point between the stationary twin-arms 4, 4. V

The inner end of the arm 7 of the feedlever carries a loose link 8, which may be in loose engagement with either one of the stationary twin-arms 4, 4, for reasons to be later explained.

9 is a curved leaf-spring, depending from the lower twin-arm 4, for holding engage-I ment with the lug 10 upon the lower end of the carrying bar 5, when such bar is at the limit of its upward vertical travel.

The drill l1, herein shown, is one ofa number of well-known types in present use, and is removably secured to the verticallyslidable carrying bar 5, in the following manner :The bracket 12 (see Figs. Sand 4) is stationary, with the upper end of the carrying bar 5. Upon this bracket is mounted the angular, plate having the horizontal concaved arm 13 "and the vertical arm 14, with the longitudinal slot 15, adapted for the reception ofthe headed pin 16, by means of which the plate can be adjusted horizontally as desired, and held in such position by the clamping screw 17. The upper handle 18 of the drill 11, when in position, rests in the concaved arm 18 of the angular plate. To hold-the handle; firmly in such position, the hook 19, with the screwsthreaded'shank 20, embraces the handle, and by manipulating the thumb-nut 21, a tension" is exerted 'uponthe hook and angular plate in opposite directions, causing the drill-handle to be tightly held in the concave arm 13.

The other point of attachment is upon the frame 22 of the drill. A bracket 23, stationary upon the carrying arm 5, is rigidly held upon the drill-frame 22 by the setscrew 24.

Below the drill and its carrying frame is the circular revoluble table 25, mounted upon the outer end of the arm 26, which is revoluble upon the vertical post 1 and vertically adjustable upon the same.

The ob ect to be drilled is carried upon the table 25, and may be gripped thereon by tical post 1 and horizontally and vertically j stable thereon. 'B e o t r. end; of this arm 27 carries the two diverging branches each p y dedi wi hoavqr isal. 61 screw 29, by Ineans of Which the object is gripped and held upon the table 25.

From the foregoing description of parts, t. ill Readily: e-s en t a the me hod of;

adjustinent is simple and 'effectiye. single vertical cylindrical: post is employed, which carries the stationary twin-arms 4:, 4, the arn1;26', upon which isinounted the Work table 25, and the grip ing aii'i'n- 27, 28, of which parts are both horizontally and vertic'al ly' adjustable upon a common, post, can be rigidly set in any desired position thereon. w

Another adjustnient which is "Very advantageous in the drilling 01; objects ofir'arying dimensions, is the link feat-h re of; the feedleireix; As seen in Fig. 1, the link-8 is loosely connected to the upper stationary twin arm 4-, and when the drillhas been fed to its lowest position, the free endof the feed= lever i'sin proX-hnityto thevivork table. This is' only possible Where the object upon the tableis of comparatively small dimension WVhen the reverse is true, the link; 8'- 'c'an be shifted to loose connection with the 1qwerstationary twin-arm 4, as seen Fig. 2, and when the drill has been fed to its lowest position, the free end of the fe'ed-leyeris considerably higher in position, this giving'ample space fordrilling Work uponan object of considerably larger dimensions.

When it isdesired-todispense with the frame, and Work thev drill: entirely by, hand, it is only necessary to detach the drill from the firame, remove the handle-3015mm the feed lever, and secure it ina socket in the :firanie, thus; giving the drill: an additional handle tohold it to itswork.

Havingthus fiully described the nature of ourinvention, What We'c'laii-n as new and desire toseou-reby Letters Patent, is

I; d ri'll Tramewmpmmga vertical cylindni'cal post 'attachableto a separate stathe carrying bar.

tionary base, stationary twin-arms horizontally, and vertically adjustable upon the 1 1 a r z ing ba yerfi allX- h a p the twin-arms, a feed-lever pi'vote'd' upon the carrying bar and loosely linked to one of the stationary twin-arms, and means for reg ovably attaching the drill to the carrying 2: A drill frame comprising a Vertical cylindrical post attachable to a stationary base, separate "statioi'ia'ry, twin-arms horizentany independently vertically adjustable 'u p'on the-post, carrying-bar ver ticall'y 'sli'dableu pon the twin arins, a feed lever pivoted""uponv the carrying bar and loosely'linked to one of the stationary twin arm's, andmeans for removably attaching the dril'l to the carryingbar,

' 3'. A drill frame co prising a Vertical cylindrical post attachable to a stationary base; separate stationary twin arins horizontal'ly and vertically adjustable upon the post, ac rrying bar vertically s-li'd'able upon the twin arnis, a feed leyerpivoted upon the carrying barf and interchangeably linked to either of the-stationary twin-arms, and meansfor 'reinovably attaohing the drill; to

I A drill; frame comprisinga'i evolable vertical cylindrical: post attachable toa's ta tionary base, separate Stationary twin-arms horizontally and, 1 independently vertically adjustable upon the post,- a carrying bar vertically; slidable upon the t i-n-arins, a feed lever pivoted: upon. the-carrying bar, and loosely v linked interchangeably-to either of the stationary twin-arms, and means ton removably' attaching-the: drill to the carry in 1 bar.

oronto, September 25th, 19-17;

' JOHN ROBB. EDG RS MUEL LY NS Signed inthe presence of'' Enwlixnn S. BERN-STEIN, W. T. MILLER.

Gopies: of this patent may be. obtainert for me cents eaehyby a diiressiilg the Gom'ihisioner of Patents, s Washington,D.G'. Q 1 

